Script - Check DNSBL Access
What it is
This script will run and test each of the currently configured upstream DNS servers against the multiple DNSBL servers used by Spam Blocker and Spam Blocker Lite.
First it will test queries against the local Untangle server which will use whatever upstream DNS and local DNS servers you have configured. Next it will test each server individually.
Some commonly used servers (like 22.214.171.124) provide inconsistent results. Sometimes queries will pass and sometimes they will fail. Running the script several times is succession may provide more accurate results in this case.